WO2002086853A3 - Method and apparatus for performing automatic display contrast adjustment in a battery powered device - Google Patents
Method and apparatus for performing automatic display contrast adjustment in a battery powered device Download PDFInfo
- Publication number
- WO2002086853A3 WO2002086853A3 PCT/IB2001/001995 IB0101995W WO02086853A3 WO 2002086853 A3 WO2002086853 A3 WO 2002086853A3 IB 0101995 W IB0101995 W IB 0101995W WO 02086853 A3 WO02086853 A3 WO 02086853A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- lcd
- temperature
- signal
- contrast
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/066—Adjustment of display parameters for control of contrast
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Telephone Function (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002210815A AU2002210815A1 (en) | 2001-04-25 | 2001-10-24 | Method and apparatus for performing automatic display contrast adjustment in a battery powered device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/841,863 US20020158861A1 (en) | 2001-04-25 | 2001-04-25 | Method and apparatus for performing automatic display contrast adjustment in a battery powered device |
US09/841,863 | 2001-04-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002086853A2 WO2002086853A2 (en) | 2002-10-31 |
WO2002086853A3 true WO2002086853A3 (en) | 2003-11-20 |
Family
ID=25285880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2001/001995 WO2002086853A2 (en) | 2001-04-25 | 2001-10-24 | Method and apparatus for performing automatic display contrast adjustment in a battery powered device |
Country Status (3)
Country | Link |
---|---|
US (1) | US20020158861A1 (en) |
AU (1) | AU2002210815A1 (en) |
WO (1) | WO2002086853A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100725684B1 (en) * | 2001-06-22 | 2007-06-07 | 엘지전자 주식회사 | Apparatus and method for controlling a back light in LCD |
KR100497378B1 (en) * | 2003-01-04 | 2005-06-23 | 삼성전자주식회사 | Apparatus and method for display |
US7675250B2 (en) * | 2003-11-12 | 2010-03-09 | Lutron Electronics Co., Inc. | Thermal protection for lamp ballasts |
US6982528B2 (en) * | 2003-11-12 | 2006-01-03 | Lutron Electronics Co., Inc. | Thermal protection for lamp ballasts |
KR100767868B1 (en) * | 2005-12-12 | 2007-10-17 | 엘지전자 주식회사 | Dimming circuit for video display apparatus and contol method thereof |
GB2511538B (en) * | 2013-03-06 | 2016-06-15 | Basic Holdings | Heating Appliance |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5582092A (en) * | 1978-12-14 | 1980-06-20 | Seiko Instr & Electronics Ltd | Electronic wrist watch of liquid crystal type |
EP0615372A1 (en) * | 1993-03-08 | 1994-09-14 | Communications Manufacturing Company | Improved data terminal for telephone circuits |
US5489834A (en) * | 1992-05-25 | 1996-02-06 | Nokia Mobile Phones Ltd. | Battery type and temperature identification circuit |
US6069449A (en) * | 1998-04-09 | 2000-05-30 | Nec Corporation | Backlight control device for an LCD |
US6100672A (en) * | 1999-08-11 | 2000-08-08 | Nokia Mobile Phones Limited | Start up charging control |
-
2001
- 2001-04-25 US US09/841,863 patent/US20020158861A1/en not_active Abandoned
- 2001-10-24 AU AU2002210815A patent/AU2002210815A1/en not_active Abandoned
- 2001-10-24 WO PCT/IB2001/001995 patent/WO2002086853A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5582092A (en) * | 1978-12-14 | 1980-06-20 | Seiko Instr & Electronics Ltd | Electronic wrist watch of liquid crystal type |
US5489834A (en) * | 1992-05-25 | 1996-02-06 | Nokia Mobile Phones Ltd. | Battery type and temperature identification circuit |
EP0615372A1 (en) * | 1993-03-08 | 1994-09-14 | Communications Manufacturing Company | Improved data terminal for telephone circuits |
US6069449A (en) * | 1998-04-09 | 2000-05-30 | Nec Corporation | Backlight control device for an LCD |
US6100672A (en) * | 1999-08-11 | 2000-08-08 | Nokia Mobile Phones Limited | Start up charging control |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 004, no. 131 (P - 027) 13 September 1980 (1980-09-13) * |
Also Published As
Publication number | Publication date |
---|---|
AU2002210815A1 (en) | 2002-11-05 |
US20020158861A1 (en) | 2002-10-31 |
WO2002086853A2 (en) | 2002-10-31 |
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